discourse vs church service

discourse and church service both are nouns.

Word	Noun	Adjective	Verb	Adverb
discourse	Yes	No	Yes	No
church service	Yes	No	No	No

discourse (noun)	church service (noun)
an extended communication (often interactive) dealing with some particular topic	a service conducted in a house of worship
extended verbal expression in speech or writing
an address of a religious nature (usually delivered during a church service)

discourse (verb)	church service (verb)
talk at length and formally about a topic
carry on a conversation
to consider or examine in speech or writing